next up previous 264
Next: astNorm - Normalise a set of Frame coordinates
Up: AST Function Descriptions
Previous: astMatrixMap - Create a MatrixMap


astNegate - Negate the area represented by a Region

Description:
This function negates the area represented by a Region. That is, points which were previously inside the region will then be outside, and points which were outside will be inside. This is acomplished by toggling the state of the Negated attribute for the supplied region.
Synopsis:
void astNegate( AstRegion $*$this )
Parameters:
this
Pointer to the Region.


next up previous 264
Next: astNorm - Normalise a set of Frame coordinates
Up: AST Function Descriptions
Previous: astMatrixMap - Create a MatrixMap

AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 211
R.F. Warren-Smith & D.S. Berry
24th May 2011
E-mail:ussc@star.rl.ac.uk

Copyright (C) 2009 Science \& Technology Facilities Council